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Author Topic: 12ga Slugs for a projectile?  (Read 1179 times)

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Offline Evil Dog

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12ga Slugs for a projectile?
« on: February 25, 2007, 03:15:18 PM »
Just wondering if anyone has tried those hollow base pellet shaped 12 ga slugs in an appropriately bored cannon?  Good, bad, or don't even bother trying?
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Evil Dog

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Offline GGaskill

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Re: 12ga Slugs for a projectile?
« Reply #1 on: February 25, 2007, 03:21:50 PM »
Shouldn't be any worse than a shotgun.
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Offline Cat Whisperer

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Re: 12ga Slugs for a projectile?
« Reply #2 on: February 25, 2007, 04:15:50 PM »
I've got a mortar or two in 12ga.  Only problem is seeing where they go ...

A cannon is  much better idea.  I've got a round ball mould and Lyman 12ga hollow base mould if you want to try some.

The slug sizes are small - so they'll go through a choke.  So I'd measure before I started to bore.

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Offline guardsgunner

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Re: 12ga Slugs for a projectile?
« Reply #3 on: February 25, 2007, 04:17:01 PM »
evil dog,
    Scaled up versions of the beeman type pellets shoot well and are popular in the nssa.
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Offline Evil Dog

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Re: 12ga Slugs for a projectile?
« Reply #4 on: February 25, 2007, 04:28:40 PM »
hmm.... appears as though I am going to have to seriously consider having a barrel made.  12ga is what... around .725?  Was looking at the 1841 barrel over at Cannon Mikes, if he can make one up in 12ga I just may have to take the plunge.  Of course that will also mandate selling the Hern Iron Works half scale Napoleon barrel that I am currently using.  Guess it will all depend on what Mike has to say.
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Evil Dog

Democracy is two wolves and a lamb voting on what to have for lunch.
Freedom is a well-armed lamb contesting that vote. - Benjamin Franklin (1759)

Offline Rickk

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Re: 12ga Slugs for a projectile?
« Reply #5 on: February 25, 2007, 05:08:57 PM »
I just measured some 12 g hollow slugs I cast. They ran about .703 - .705 . I forget whose mold it is... I'll try to find it tomorrow.

You might want to get a mold and cast some slugs before you order the barrel.

A thought just crossed my mind... not sure if it is a good one or a bad one, but you maybe could push the tolerances a bit with hollow slugs. The muzzle could get a bit of a chamfer to get the slug started if it isn't perfect. Even if it is perfect, a slight chamfer whould help if the windage is tight due to the square base of the slug. Others may have some thoughts/opinions about that.

Also, there are sabot slugs that are designed to be used in regular plastic shotgun wads, which opens up many new possibilities.

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Offline Rickk

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Re: 12ga Slugs for a projectile?
« Reply #6 on: February 25, 2007, 05:11:51 PM »
wow, I just had a really strange idea...

What if the muzzle end of the bore was threaded to accept a shotgun choke? They make rifled chokes for slug shooting. You might have to unscrew the choke to load it.

I never had a screw-in choke in anything, so I don't know how practical that is... just throwing it out before the thought leaves me.
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Offline Evil Dog

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Re: 12ga Slugs for a projectile?
« Reply #7 on: February 25, 2007, 06:21:47 PM »
Every once in a while I actually have a flash of sanity.  Rather than selling my half scale Napoleon barrel at what would no doubt be a substantial loss and then investing a minimum of $625 in a new barrel, would it not be a lot more practical to have a 12ga bored tube made to implant in my 2 1/4" bored barrel?  Just a thought but probably well worth exploring.
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Evil Dog

Democracy is two wolves and a lamb voting on what to have for lunch.
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Offline Rickk

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Re: 12ga Slugs for a projectile?
« Reply #8 on: February 26, 2007, 12:49:28 AM »
If it were me, I would keep the first one and get the second one so neither wold be lonely.
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Offline CrufflerSteve

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Re: 12ga Slugs for a projectile?
« Reply #9 on: February 26, 2007, 08:49:24 AM »
Quote from: Evil Dog on February 25, 2007, 06:21:47 PM
Every once in a while I actually have a flash of sanity.  Rather than selling my half scale Napoleon barrel at what would no doubt be a substantial loss and then investing a minimum of $625 in a new barrel, would it not be a lot more practical to have a 12ga bored tube made to implant in my 2 1/4" bored barrel?  Just a thought but probably well worth exploring.

That would be a heck of a subcaliber since 12 ga is 0.73". I think the idea of a second cannon makes sense. Perhaps that one could follow the twist used by rifled slug barrels.

Steve
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Offline Double D

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Re: 12ga Slugs for a projectile?
« Reply #10 on: February 26, 2007, 04:37:20 PM »
Why don't you look around for a fully rifled shotgun barrel.  Gunshows and Numrich arms.  Also the Gun auction sights.
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Offline CrufflerSteve

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Re: 12ga Slugs for a projectile?
« Reply #11 on: February 27, 2007, 05:45:32 AM »
Quote from: Double D on February 26, 2007, 04:37:20 PM
Why don't you look around for a fully rifled shotgun barrel.  Gunshows and Numrich arms.  Also the Gun auction sights.

Could that be made to work as a muzzle loader since the slug is meant to be loaded from the breech? I don't think we want to go into discussing a breechloader design. 12 ga is more than 1/2 inch so you might have legal issues.

Steve
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Offline Artilleryman

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Re: 12ga Slugs for a projectile?
« Reply #12 on: February 27, 2007, 07:09:46 AM »
For a muzzleloading cannon use hollow base slugs and they should expand into the rifling.  If it is a muzzleloading cannon there shouldn't be any more legal issues than with any other type of cannon.  It occurs to me that you could line muzzleloading cannon with rifled musket barrels.  You just have to be willing to spend the money.
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Offline Cat Whisperer

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Re: 12ga Slugs for a projectile?
« Reply #13 on: February 27, 2007, 02:51:50 PM »
Here's a mould that was for sale at the N-SSA national's in Winchester, VA a few years back.



I have no idea of how well it works.

I did see about 10 years ago the winning cannon target with 3" holes cut in it with a lead bullet that looked like it was square - flat nose and wide deep hollow base.  Wall thickness of 1/4 to 3/8" inch.
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Offline Powder keg

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Re: 12ga Slugs for a projectile?
« Reply #14 on: February 27, 2007, 06:14:05 PM »
That would be a pretty challenging part to machine on my equipment. I would be fine till I got to the middle. The part that would be the top of the pellet. Wonder how they do that?
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Offline Double D

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Re: 12ga Slugs for a projectile?
« Reply #15 on: February 28, 2007, 03:42:24 AM »
CNC or tracer, my guess.
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Offline GGaskill

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Re: 12ga Slugs for a projectile?
« Reply #16 on: February 28, 2007, 07:38:20 AM »
It wouldn't be too hard to make the forward part of the cavity on a manual machine but holding that forward diameter would be a challenge.  Even on a CNC lathe you would need a special tool setup for it.
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